Hmmm. Okay, when you say T. rex slowly and distinctly, is there still a ch- sound in there?
No, but that's because I'm not saying Trex. I'm saying tee rex. If I were saying Trex and using the T not as an initial but as a sound in and of itself, it'd be different.
My teeth and jaw don't move when making t, r, or sh - but my tongue does. If I go t, t, t my tongue is right behind my teeth. If I go sh, sh, sh my tongue is right behind the alveolar ridge. And if I go r, r, r my tongue is behind the alveolar ridge, but pointing upward. (Bit hard to explain - it's "further back" than when going sh.) So in between t and r my tongue HAS TO move into the sh position.
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No, but that's because I'm not saying Trex. I'm saying tee rex. If I were saying Trex and using the T not as an initial but as a sound in and of itself, it'd be different.
My teeth and jaw don't move when making t, r, or sh - but my tongue does. If I go t, t, t my tongue is right behind my teeth. If I go sh, sh, sh my tongue is right behind the alveolar ridge. And if I go r, r, r my tongue is behind the alveolar ridge, but pointing upward. (Bit hard to explain - it's "further back" than when going sh.) So in between t and r my tongue HAS TO move into the sh position.